A sector of a circle of radius 8cm is bent to form a cone. Find the radius of the cone and it vertical angle if the angle sub tended at the center by the sector is 280°
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Help me to solve it
radius of cone (r) ... r = (280º / 360º) * 8 cm
vertical angle (Θ) ... sin(Θ / 2) = r / 8 cm
vertical angle (Θ) ... sin(Θ / 2) = r / 8 cm
2.17
2 answers